Authorities have obtained a search warrant for Prince 's home following his sudden death last week.

Police in Carver County, Minnesota, have been granted a warrant to search the late singer's mansion in Paisley Park Studios, where he was found dead.

Authorities are said to be growing increasingly suspicious over the cause of the music legend's death, leading them to obtain the warrant.

Tellingly in their application, they asked a judge to seal the reasons behind their request to protect vital evidence being destroyed.

Prince died age 57

The development came after it emerged the singer was found with powerful painkillers on his person when he was found dead by paramedics last Thursday.

Police answering a frantic 911 call alerting them to his body found the singer had opioid medication, thought to be Percocet, in his possession when he was discovered.

A source told the Mirror: “Detectives are increasingly looking at Prince’s medical history and how he was able to obtain drugs that are only available on prescription.

“They want Paisley Park searched from top to bottom to see if there is any evidence of drugs, prescriptions, medical record or correspondence that could help in the death investigation.

Prince pictured in 2010

"Criminal conduct involved in his death is a very real possibility. Detectives are starting to build a picture up of Prince’s life and already they have discovered a lot of details.

“They are determined to leave no stone unturned in finding the true cause of his death. Police in Chanhassen have a deep affinity for the singer, he was part of the community and did a lot for the area.

"They feel like they owe it to his family to get to the truth.”

In yesterday's application prosecutors requested the "search warrant and accompany documents to be sealed until commencement of any criminal proceedings or 180, whichever occurs first”.

Prince 'Welcome 2 America' Tour concert (Image: Rex)

It went on to state it was important to keep the reason as to the request of secrecy because "premature disclosure of the details provided in the search warrant and its accompanying documents may compromise this law enforcement investigation by causing the search or related searches to be unsuccessful."

And it comes after police investigating the music legend's death asked the US Drug Enforcement Administration for help with their enquiries.

According to NBC News the DEA was called in after the discovery of the pills.

The Paisley Park mansion where Prince was found dead (Image: Splash News)

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The 57-year-old superstar was found dead at his home in Minneapolis on April 21 with a post-mortem carried out the following day unable to establish a cause of death.

He was seen for the last time on Wednesday night after visiting a nearby pharmacy with Sheriff Jim Olson of the Culver County Sheriff Office confirming there were no sign of trauma on his body and that the singer had died alone.

Fans leave tributes outside his home (Image: WENN.com)

An employee at the Walgreens Pharmacy that served Prince told RadarOnline they had been shocked by the singer's appearance the night before his death: “We were all just shocked that he came in last night looking so beat. We said, ‘We are praying for you.’”

Prince had been admitted to hospital just days before his death, with reports at the time claiming he had been suffering from flu.